<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title>计算1到100个数相加和</title>
</head>

<body>
    <script>
        function getSum() {
            var sum = 0;
            for (var i = 1; i <= 100; i++) {
                sum += i;
            }
            document.write('1到100个数相加和是：' + sum);
        }
        getSum();
    </script>


</body>

</html>